Study the graph given below

Study the graph given below and answer the questions that follow.
(i) Write the status of food and space in the curves A and B.
(ii) In the absence of predators, which one of the two curves would appropriately depict the prey population?
(iii) Time has been shown on X-axis and there is a parallel dotted line above it. Give the significance of this dotted line.

(i) A-Unlimited food and space 5-Limited food and space
(ii) Curve B
(iii) The dotted line represents the carrying capacity. It is the capacity of a given habitat having enough resources to support maximum possible number, beyond which no further growth is possible.